Flight OddsUA3997 ATL → IAH
United Airlines · Atlanta, GA to Houston, TX · 18 flights observed, 2025-12-19 to 2026-01-05 · 689 mi
UA3997 covers more than one route in the data window — the stats below are for ATL → IAH, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
94%
Median delay
-27 min
90th percentile
-10 min
Cancellation rate
0%
How often is UA3997 on time?
Across 18 flights on ATL → IAH from 2025-12-19 to 2026-01-05, UA3997 arrived within 15 minutes of schedule 94% of the time. The median arrival delay was -27 min, and the worst 10% of flights arrived -10 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 17 | 94% |
| 16-30 min | 0 | 0% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 1 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 13 | 100% | -27 min |
| 2026-01 | 5 | 80% | -1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 67% |
| Tue | 2 | 100% |
| Wed | 2 | 100% |
| Thu | 2 | 100% |
| Fri | 3 | 100% |
| Sat | 3 | 100% |
| Sun | 3 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…